Counting and calculating is fun, especially with these colourful wooden balls that children place on the sorting board. The 21 double-sided template cards come in different difficulty levels and can be adapted to each child's level of knowledge. Whether alone or in a group, children discover the number range from 1 to 10 in a playful way. Marbelino 3 continues the popular Marbelino series. Size: 39.5 x 29.5 x 9.2 cm. Ages 4+.